Flash mob at Union Square

Around 30 people gathered at Union Square in Manhattan at 12:18 pm on Monday to make simultaneous cell-phone calls to President Barack Obama and Secretary of State Hillary Clinton, asking them to support a strong international treaty to slash greenhouse-gas emissions and stop global warming.  The event, organized via text messaging, was part of a global Climate Wake-up Call to world leaders, with similar gatherings happening at 12:18 PM local time in more than 2200 locales in 128 nations.

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Many of the callers at Union Square encountered busy signals and full voice mailboxes — suggesting that calls were being made from hundreds of similar “flash mobs” up and down the East Coast at the same time.

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The time is symbolic of the date December 18 — the last day of this year’s international climate treaty negotiations in Copenhagen.

Advocacy group Avaaz.org has been getting live reports on Wake-up Call events around the world.